Clock, KE, herbicide

Technological Profile: Propisochlor as the Core of Weed Control

Klok, EC is a systemic soil-applied selective herbicide developed by Agro Life Science Corporation (India) for the protection of fodder beet crops. The active ingredient, propisochlor, belongs to the chloroacetanilide family, providing a long-lasting protective barrier on the soil surface.

Mechanism of Action and Selectivity

The efficacy of Klok is based on the inhibition of protein and nucleic acid synthesis in the meristematic tissues of weeds. Due to its systemic activity, the product is absorbed by the coleoptiles of germinating grass weeds and the hypocotyls of broadleaf weeds. This halts cell division even before the weed emerges from the soil.

• Selectivity: The product is specifically formulated for sensitive crops like fodder beet. When applied according to regulations, the herbicide does not inhibit the development of the crop, allowing it to close rows faster.
• Soil Barrier: The emulsifiable concentrate forms a stable protective film on the soil surface. This prevents secondary flushes of weeds during the critical growth stages.

Practical Application Notes

The emulsifiable concentrate formulation ensures high stability of the tank mix and uniform distribution across the field. For maximum effect, the soil must be well-prepared; the absence of large clods is a prerequisite for creating a consistent protective screen. The application rate ranges from 2.0 to 3.0 liters per hectare, depending on soil type and expected weed density. A single pre-emergence application is sufficient to suppress a wide spectrum of annual grass and broadleaf weeds. The herbicide is classified as hazard class 3, requiring standard safety protocols when handling agrochemicals.